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' E. HAWES.

MACHINE FOR MAKING SHEET METAL LATHING. No. 388,866. Patented Sept; 4,1888.

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E. HAWES.

MACHINE FOR MAKING SHEET METAL LATHING'.

No. 388,866. Patented Sept. 4, 1888.

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UNITED STATES PATENT FHCEO ELISI'IA HAXVES, OF SACRAMENTO CITY,CALIFORNIA.

MACHINE FOR MAKING SHEET METAL LATHING.

SPECIFICATION forming part of Letters Patent No, 388,866, datedSeptember 4, 1888.

Application filed July 16, 1887. Serial No. 244,519. (No model.)

quired for lathing, of which the following is a specification.

My invention relates to an improvement in machines for punching andshearing sheet metal; and it consists in the combination of r 5 deviceshereinafter described.

end elevation of the same.

In the accompanying drawings, Figure l is a top plan view of a punchingand shearing machine embodying myimprovcments. Fig. 2 is a sideelevation of thesame. Fig. 3 is an Fig. 4 is a detail elevation of oneside or standardof the frame. Figs. 5 and 6 are detail sectional viewsof one pair of the rolls, showing the punches and shears attached to oneof said rolls. Fig. 7 5 gives detail views of the punches, and Fig. 8

gives similar views of the shears.

A represents the sides of the frame, which are of the form here shown,are provided at their lower corners with supporting-feet B,

and in said sides are secured bearings O, D,

and E. The feet- 13 are bolted to a base-plate, F, and a pair oflongitudinal bars, G, connect the upper edges of the sides.

H I represent two pairs of rolls, which are arranged one above the otherand have their shafts jonrnaled in the bearings C D, respectively. Therolls H are each provided with a spur-wheel, K, and the rolls I havespurwhecls L, of the same size as wheels K and meshing therewith,thereby gearing the upper rolls, H, to the lower rolls, I, in pairs.Each upper roll, H, has a series of threaded openings, M, arranged in astraight longitudinal line, and is further provided with annular groovesN, which may be either straight and at right angles to the axes of therolls or angular and arranged obliquely to the axes of the rolls, asshown in Fig. 2. In the said grooves N are secured annular cutters orshears O, and in the openings M are screwed the inner ends of punchesIP. The said outters and punches project beyond the faces of rolls H,and are adapted to enter countersunk recesses R- S, respectively, in thefaces of rolls I. The said rolls are hollow, and are prefera- WVrepresents a guiding-apron, which is ar' ranged in a longitudinal planeon a level with the proximate faces of the pair of rolls, and Yrepresents a cover to said apron. The apron and cover are preferablymade of boileriron to secure sufficient strength and rigidity, and aresupported and maintained in position by suitable standards, X, as shown.

The operation of my invention is as follows: The sheet metal to hepunched and sheared is fed between the first pair of rolls, and as thesame rotate their punches P punch holes in the sheet metal when theyregister with the openings R, and,the punches being somewhat smaller indiameter than the said openings, a boss is formed around each punchedhole. The cutters O and countersunk grooves or recesses S cause thesheet metal to be cut or sheared into strips of suitable width,according to the points on the rolls at which the cuttors are located.As the sheets of metal travel between the first pair of rolls and areforced rearward thereby, they come in contact with the guideapron W andcover Y, which direct said sheets between the second pair of rolls, aswill be readily understood. The function of the said second pair ofrolls is to unite the edges of the sheared and punched sheets byclinching the same as the said sheets pass between them.

Having thus dcscribcd my invention, I claim- 1. The combination of thercvoluhie rolls H I, having the projecting punches or cutters (or both)and the countersunk openings and eesses or grooves on their opposingfaces, the

gears K L, connecting said rolls together in pairs, and thedriving-shaft T,having the gearwheel V, meshing with and connecting thegears L, for the purpose set forth, substantiall y as described.

4. The combination of the pairs of rolls geared together and having theprojecting punches or cutters (or both) and the count-ersunk openings orrecesses on their opposing proximate faces, and the guidingapron\V,arranged between the said pairs of rolls, substantialiy' as describedELTSHA I-IAWEs.

\Vitnesses:

JOHN HENRY CARROLL, EDGAR B. CARROLL.

